Skull and Double Crossbones Jonny Quest : Season 1 Episode 11

Modern day pirates are after the treasure from a sunken Spanish galleon. When Jonny finds a doubloon near a wreck, the pirates make their move. They take the Quest team hostage and force Jonny to return for the treasure. Rescue comes from an improbable source, as Bandit dons scuba gear and alerts the local coast guard! A chase begins, ending with the pirates sunk and the treasure back in Davy Jones' locker.